Samsung Electronics Co., Ltd.

Qualcomm Incorporated

William Higgins

Sundar Raman

Ali Jafarnia Jahromi

Mangesh M Chansarkar

Charles P Norman

Paul A Underbrink

James M Brown

Henry D Falk

Qingwen Zhang

Robert Harvey

Peter Michali

Francis Keith Scherrer

Gensheng Zhang

Pravesh Asthana

A system and a method are disclosed for verifying a Global Navigation Satellite System (GNSS) space vehicle (SV) signal. An extremely weak frame synchronization (EWFS) verification process is run on a current SV signal with respect to another verified SV signal. An indication is set that frame synchronization for the current SV signal is complete after full frame synchronization occurs based on a peak EWFS correlation value of the current SV signal being equal to or greater than a first threshold. The indication may be set early based on the peak EWFS correlation value of the current SV signal being greater than a second threshold value that is greater than the first threshold. Tracking of the current SV signal may be terminated early based on the peak EWFS correction value of the current SV signal being less than a third threshold that is less that the first threshold.

Detection and termination of fake GNSS measurements in the presence of interference

A receiver and method thereof are provided for synchronizing with a global navigation satellite system (GNSS) including a plurality of satellite vehicles (SVs). The method includes starting a verification process and a bitsync (BS) process in parallel with a first SV among the plurality of SVs, and upon completing the verification process while still performing the BS process, starting a track channel process with the first SV based on an interim BS result obtained at the time of completing the verification process, and starting a frame sync (FS) process with first SV based on the interim BS result. An aligned acquisition (AA) process may be started with a second SV among the plurality of SVs, upon completing the verification process, based on the interim BS result.

Method and apparatus for synchronizing with global navigation satellite system

Control and feature systems for processing signals from a satellite positioning system include an expert system receiver manager; a joint detection, carrier centring and bit sync acquisition subsystem; peak detection; a multi-dimensional measurement interpolation subsystem; a system for mode switching between a navigational signal; and power control module for receiver.

Control and features for satellite positioning system receivers

Growing community of inventors

Marlon, IA, United States of America

William Higgins